Measurements:
°C
°F
CURRENT WEATHER
20:53
Key West
88°F
W 6 mph
Feels like: 96°F
Precip: 7%
World Resorts USA Key West Weather

7 Day Weather Forecast

10.05
mon
DAY
88°F
NW 9 mph
precip
17%
NIGHT
86°F
W 8 mph
precip
34%
10.06
tue
DAY
86°F
NW 6 mph
precip
7%
NIGHT
86°F
NW 4 mph
precip
19%
10.07
wed
DAY
86°F
N 5 mph
precip
8%
NIGHT
86°F
NW 7 mph
precip
33%
10.08
thu
DAY
86°F
NW 11 mph
precip
18%
NIGHT
86°F
NW 10 mph
precip
8%
10.09
fri
DAY
88°F
NW 14 mph
precip
16%
NIGHT
86°F
W 17 mph
precip
23%
10.10
sat
DAY
88°F
NW 16 mph
precip
43%
NIGHT
88°F
NW 9 mph
precip
50%
10.11
sun
DAY
86°F
NW 15 mph
precip
39%
NIGHT
88°F
W 12 mph
precip
25%

Key West Sea Water Temperature in October, °F

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Key West was 28.8°F. The maximum and minimum values were 27.5°F and 30.2°F respectively.

Key West on the Weather Map

Best Time to Visit Key West
The most sunny months:
May 17 days
March 16 days
April 16 days
The most warm months:
August 91.5 °F
July 91.0 °F
September 89.6 °F
Warmest sea temperature:
August 91.4 °F
July 90.8 °F
September 90.2 °F
The most cold months:
January 74.4 °F
February 76.3 °F
December 78.2 °F
The most rainy months:
June 7 days
August 7 days
September 6 days
The most windy months:
November 14 mph
December 14 mph
January 14 mph
more details